Report the number of samples in the test set

app.py

@@ -29,6 +29,8 @@ with tab1:
     dataset = datasets.load_dataset(dataset_name)["test"]
     labels = {dialect: dataset[dialect] for dialect in DIALECTS_WITH_LABELS}
 
+    print("Loaded the labels, no. of samples:", len(dataset))
+
     # Load the models' predictions
     try:
         model_predictions_rows = datasets.load_dataset(